447171456 has 64 divisors (see below), whose sum is σ = 1193644800. Its totient is φ = 148323840.

The previous prime is 447171427. The next prime is 447171457. The reversal of 447171456 is 654171744.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×447171456² = 399924622122319872, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (447171457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78265 + ... + 83783.

It is an arithmetic number, because the mean of its divisors is an integer number (18650700).

Almost surely, 2^447171456 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 447171456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (596822400).

447171456 is an abundant number, since it is smaller than the sum of its proper divisors (746473344).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

447171456 is a wasteful number, since it uses less digits than its factorization.

447171456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5747 (or 5735 counting only the distinct ones).

The product of its digits is 94080, while the sum is 39.

The square root of 447171456 is about 21146.4289183777. The cubic root of 447171456 is about 764.7004714002.

The spelling of 447171456 in words is "four hundred forty-seven million, one hundred seventy-one thousand, four hundred fifty-six".